Valve-tool



A. c. ROSENBRO0K..

VALVE TOOL.

APPLICATION FILED FEB. 12, f9l9.

Patented May 11, 1920.

IN VE N TO/ n I'll M MAW? M N/w UNITED STATES PATENT OFFICE.

AUGUST C. ROSENBROOK, OF MADISON, WISCONSIN.

, VALVE-TOOL.

'1 0 all whom it may concern:

Be it known that I, AUcUs/r C. ROSEN- BROOK; a citizen of the United States, and

resident of Madison, in the county of Dane and State of Visconsin, have invented new and useful Improvements in Valve-Tools, of which the following is a description, reference being had to the accompanying drawings, which are a part of this specification.

The invention relates to valve tools and more particularly to a device for relieving the valve of spring tension so that it may be readily removed from its seat. 7

One of the objects of this invention is to provide a tool for use on Ford automobiles or others having similarly arranged valves whereby a pair of valves may be removed on a single setting of the valve tool.

Another object of the invention is to provide a valve tool where operation will not be interfered with by reason of the location of the exhaust manifold adjacent the valves.

A further object of the invention is to provide a valve tool in which the spring lifting lever is fulcrumed upon an arm which may be either easily seated in one of the cylinder cover bolt holes or which may be seated in the socket of a member mounted on a cylinder cover stud.

A further object of the invention is to provide a valve tool in which the fulcrum may be freely turned about its support and in which the lifting lever may be moved longitudinally of the fulcrum.

WVith these and other objects in view the invention consists in the novel parts and combinations of parts hereinafter described and more particularly defined by claims at the conclusion hereof.

In the drawings:'

Fi ure 1 is a view of the device embodying the invention, parts being shown in section, showing it applied to an engine block;

Fig. 2 is a detail plan view of the end of the lifting lever;

Fig. 3 is a detail end view of the lever applied to the valve;

Fig. 4 is a detail view of the bracket to which the supporting arm and fulcrum is connected;

Fig. 5 is a detail View ofthe fulcrum.

secured to a socket member mounted on a cylinder head stud; and, v i 1 Fig. 6 is a plan view of the socket member shown in F i 5. Referring to ld ig. 1 of the drawings, the

Specification of Letters Patent.

Patented May 11, 1920.

Application filed February 12, 1919. Serial No. 276,674.-

numeral 7 designates a portion of the cylinder block having a port 8 therein covered by the valve 9 and disposed adjacent the exhaust manifold 10. The valve 9 is slidably mounted in the block and a collar 12 on the stem rests upon a cotter .pin 13 passing through the valve stem below the collar. The purpose of the valve tool is to compress the spring near its lower end away from the cotterv pin .13 so that said pin may be removed, the spring taken off the valve stem and the valve pulled up out of the block in case its seat needs grinding. In the particular cylinderblock here shown the cylinder In other types of cylinder blocks using re movable cylinder heads; studs 14' are secured in the block and pass through the cylinder cover and in that instance the equivalent of the bolt hole construction is obtained by inserting a socket member 15 over the stud, one bore 16 fitting the stud and the other bore 17 serving the same purpose as the bolt hole 14.

The valve tool consists of a spring lifting lever 18 and its support and fulcrum 19.

The lifting lever 18 is of sheet metal channel shaped. in cross section. It has a curved portion 20 of considerable length for good leverage and straight handle portion 21. The front end of the lever has a central stem receiving notch 22 therein and the sides 23 adjacent thereto are flattened down so as to provide a smooth surface for engagement with the bottom of the collar 12. Secured intermediate the ends of the lever and projecting upwardly therefrom and forming a part thereof is a member 24 having spaced slots 25 and 26.

The fulcrum and attaching member 19 is in the form of a large hook having a straight end 27 and curved outwardly and down wardly so as to easily clear the manifold 10. The outer end 28 of the member 19 is bent rearwardly and passed through the slot 25 and curved upwardly and forwardly through the slot 26 to form a longeye, the elongated sides of which have some sliding movement with respect to the member 24 which is also free to swing about the eye as a fulcrum.

With the construction above described, where the cylinder block has a bolt hole, such block the notched end of the lever 18 is slipped onto the valve stem between the cotter pin 13 and collar 12 by a slight forward sliding movement of the lever with respect to themember and then by a downward pressure upon the handle the spring isreadilycompressed .while the lever swings about its fulcrum so that the cotter pin can be removed and the valve can then be withdrawn from its seat. Where as previously pointed out, the valves are arranged close together or in pairs with the member 19 attachable .to av portion of the block between them, the second valve may be removed without changing the setting of the fulcrum.

From the foregoing description it will be observed that the device is simple but well adapted for the purpose described.

What I claim as new and desire to secure by Letters Patent is: v

1. Ina valve tool, the combination of a vchannel bar valve spring lifting lever provided with a valve stem receiving notch and a fiat portion surrounding the sides of the notch, a member secured to said lever lntermediate its ends and having a pair of spaced apart apertures, and a supporting fulcrum having a straight socket engaging end, an eyed end having parts loosely passing through said spaced apertures and a manifold clearing portion connecting said ends.

2. In a valve tool, the combination of a valve-spring lifting lever provided with a valve-stemreceivi'ng notch, a member on said lever intermediate its ends and having-a pair of spacedapart apertures, and a $11131 porting fulcrum having an anchoring end, an end having parts loosely passing through said spaced apertures and amanifold-clearing portion connecting said ends.

3. In a valve tool, the combination of a valve-spring lifting lever provided with a valve stem-receiving portion and an apertured part intermediate its ends, and a sup- )ortin' fulcrum havin an anchorin end and an end having parts slidably and vertically pivotally mounted in said part and being elongated in a vertical plane to prevent lateral movement of said lever withrei spect to the fulcrum.

In testimony whereof, I aflix my signature, 7

in presence of two witnesses, 7,

AUGUST 0. ROSEN'BROOK. Vitnesses: V r r K. HOUGHTON, Wm. B. BAGLEY. 

